Boulders tumbled overhead, barely visible against the darkness of the sky.
They slammed into the approaching horde.
The demons kept charging uphill, even as dozens of them were crushed beneath the tumbling rocks.
Their war cries grew in intensity.
More demons collapsed on the front lines, ballista bolts sticking out from their chests and heads.
Their brethren trampled them.
The automaton ballistae let out an endless series of thunks and plinks as they fired their stream of bolts.
Their mechanisms whirred noisily as they reloaded.
Larger ballista bolts soared over the wall and into the enemy, spearing several demons at once.
"More of them," Sen gasped.
Another mass of demons spilled out of the portal.
The tear in reality fluctuated wildly but emitted no light onto the volcanic rock surrounding it.
The new demons wasted no time in summoning their weapons and joining the reckless charge toward the keep.
"Don't worry about their reinforcements. Just cast," August said.
